Given the age of the meteorite is 4.5 billion years old with 78 atoms of lead-206 the answer should be B. 156. The half-life of uranium-238 in order to decay into lead-206 is 4.46 billion years, which means that the original number of atoms is 156.
4. Evaporative cooling can be defined as the process of removal of the latent heat from a surface by the evaporation the evaporation of a liquid from there, which results in the reduction of the temperatures. This technique is used for cooling the homes in the dry and hot areas, such as South Carolina. The dry and hot surrounding there makes it easier for the water to evaporate when it passes through the evaporative coolers, making the surrounding air cooler.
Hence, the given statement is true.
5. When the outside temperature is as high as 83 degree Celsius, while the relative humidity is 66%, , it is likely that the sweating will take place, and the water will be evaporated from the skin, making a person feel cooler.
Hence, the given statement is true.
The Corpus Callosum seperates the brains right and left hemispheres.
<span>Answer: Opening of Na+ and K+
Explanation:
Acetycholine binding opens Na+ and K+ ion channels in the receptors that allow simultaneous passage of Naâş into the muscle fiber and Kâş out of the muscle fiber. More Naâş ions enter than Kâş ions exit, which produces a local change in the membrane potential called the end plate potential.
Binding of acetycholine to receptor proteins opens Na+ and K+ channels resulting in jump in resting membrane potential(RMP) from -90mV to +75mV forming an end-plate potential (EPP).</span>
Answer:
The answer to the enunciated: your employer lets you know that the safety data sheets are located on a computer in his office. Does this comply with employer responsibilities? is:- This act doesn't comply with the responsibilities of the employer.
Explanation:
The responsibilities of the employer are to guide the employed about the things in the company, of the sentence you can deduct two sceneries:
- The employed is in training in the company, the reason why the employer is saying to him where are the safety data sheets, but the correct would be to show the sheets and how function them.
- The safety data sheets are reserved for people with a high rank in the company, the reason why the employer must not say it to the employed.
